Steam-boiler.



H. FURMAN.1

STEAM BOILER.,

APPLICATION FILED MAY 8| IQIL A v l ,244,31 Patented Oct. 23,1917.

2 SHETS-SHEET I.

H. FURMAN.

STEAM Boum.

APPLICATIN'ILED MAY, 1917- 1,244,316. Patented Oct. 23, 1917.

2 SHEETS-SHEET 2.

/J f *gull imrrnn sauras' rarnnr orrioii.

HORACE FURMAN, 0F PETERSBURG, VIRGINIA.'

STEAM-BOILER.

T0 all whom t may concern:

Be it lrnown that l, HORACE FURMAN, a citizen of the y, United States, residing .at Petersburg, R. D. #1, in the lcounty of Prince George and State of Virginia, have invented new and useful Improvements in Steam-Boilers, ofwhich the following is a specification. y l

My present invention relates to improvements in steam boilers, and. more particularly to those of the type. adapted formarine purposes.v The primary object of the invention is to provide an improved yboiler, of this type whereby a maximum steaming capacity with a given `area of grate surface is obtained, the water passages being so arranged that .proper circulation of 'the-water is insured andthe liberation of steam therefrom is facilitated.. Another. object of the' invention is to provide certain structuralim- .provementsin boilers of this type whereby the steaming capacityof the boiler may be determined by assembling an appropriate numberof superposed units and .the steaming capacity may `be' increased or diminished by .increasing or diminishing the .numberv of units', the grate surface, however, remaining thesame, and any unit may be easily and quickly removedy for repair and replaced and thewater tubes of the units are supported at their inner and hottest ends b y intermediate manifolds, thereby preventing sagging of the water tubes. y

To these and other ends, the invention consists 'in certainimprovements, and combmations and arrangements of parts, all as will be, vhereinafter more vfully described, the

novel features being'p'ointed out particularly in the claims at the end of the specification.

In the accompanying drawings Figure l represents, partly in section and partly in front elevation, a marine boiler constructed in accordance with they present invention, the section being taken on the line 1--1y of Fig. 2; and A Fig.2 is a view, partly insideelevation wand/,partly insection, on the line of imilar parts are designated by thesaine l ASpecification of Letters Patent. Patnted 0.313,23, 1917, Application ined May s, i917. serial No. 167,286.

is limited.. The preferred embodiment of thel boiler is shown in the accompanying. drawings and will be hereinafter describedl in detail, but itis to 'be understood that the invention is not restricted to the precise i construction and arrangement shown, as equivalent constructions and arrangements are contemplated and will be included within the scope of the claims.

In the present instance, the boiler is provided with a grate 1 of suitable dimensions,

a combustion chamber 2 having fire doors 3, and an ash-pit 4l lis formed below the grate. `The boiler proper comprises a` set of upright manifolds 5, these uprighty manifolds being located lat the outer corners of the i boiler, y.uppers and lower horizontal manifolds 6 which connect the upper and lower ends of the corner manifolds 5 at the front and rear ends of the boiler, andvhorizontal manifolds 7 connect the upper and lower y ends of the pairs of corner manifolds 5 at the respective sides ofthe boiler. The pair' of corner manifolds 5 at eachside of the boiler is also connected by an appropriate number of lintermediate horizontal manifolds 8, ,the number ofY these intermediate manifolds depending on the number of units composing the boiler In addition to the upright corner manifolds 5, a pair of intermediate upright manifolds 9 is'used, each ofV zontal manifolds l0 the number of which depends on the number of units. composing theV boiler. In the vpresent instance, a pairk of steam-collecting drums 1lV and 12 is used, each drum being connected at its endsv to the upper horizontal ymanifolds 6 at, opposite sides of the vertical center of the boiler by the fittings 13. Two sets of water .tubes 14: and l5 are provided,these sets of water` tubes being placed at opposite sides of the ycenter manifolds 10. Each water tube comi prises a unitiand is in the form of return bends arranged horizontally. v The water tubes,accordin`g to the present invention, are carried by different sections of the boiler,

which sections are assembled to provide av boiler of the desired capacity. In the present instance, the lowermost section is designated A and it comprises the basemember of the boiler composing the grate,V combus-r united by flange or other suitable fittings 16,l

the intermediate upright manifolds 9 being similarly built up of sections detacliably coupled or united to enable diderent numbers of sections to be used. ln each instance, the sectionsA and'C -will `be used and, in a boiler of minimum capacity, the section C may be superposed directly on the lower or basesection A, omitting the intermediate section B. ln order to provide boilers of greater steaming capacity, one V.or more intermediate sections B are interposed between the base and top sections and C. As shovvn in the present instance, each section of the boiler comprises an outer horizontal 'manifoldA to supply Water to v the Water tube units thereof, anda pair wof center manifolds to receive the heated rWater containing steam from theavate'r tube units.`

l For instance, they Water tube units of the base section are connected by the pipes 1.7 and i8 to the lower horizontal manifold 7,

and the innerends i9 and 2O of these units are connected to "thetivo lower centralinanifoldsflO. The Water tubeunits of the. intermediateand topsections B and C kare 'conne'cted to receive. Water from the interme diate horizontal manifolds 8, and the inner ends vof the water tube'of the intermediate section B and the inner ends of the lower vWater tube units of ythe top section C are connected to thecentral horizontal manifOldslO. Preferably, the'upper Water tube units of the top section C are connected at tlieir'inner ends 2l directly to the bottom of the steam-collecting drum at the respective sides of the boiler.

By assembling the 4sections of theboileir in superposed relation and in numbers depending yon the desired capacity of the boiler, thesteaming cap'acityvof the boiler is varied Without, hovvever, varying the area of the grate surface, and the super-posed relation ofthe sections Vinsures maximum 4utilization of Vthe -heat from the lcoiiilius'tion chamber before the gases or Wasteproducts of com,- bustion reach the stack. By lprovidi'ng the central or intermediate inanifoldsto collect the heated steam containing ivater from the Water tubeunits, eiiicient circulation of the `Water through all the Water tube units is insured, so that the generation of steaniiis facilitated andY` damage to lthe Water tube units, dueto inefcient or faulty circulation, isprevented. Y

Furthermore, these central or intermediate manifolds perform the additional functionn of mechanically supporting the inner -endsgof the Water tube units, thereby-premore of these tubes may be' removed or reiv placed Without interrupting the service of f' the boiler, and also plugs areprovided in line With the horizontal manifolds 7, S and 10 to permit cleaning of sediment from these manifolds without requiring disman-v tling of the boiler. Y

l yclaim as my invention: l. A steam boiler comprising a vsteam drum, outer Wat-er manifolds, Water tubes arrangedrin units at opposite sides` of the vertical center of then boiler and 'connected at their outer ends 4to receive tvater from said outer 'manifolds` intermediate i'vat'ei1 manifolds arranged between the'outer manifolds and connected to the inner endsy of the Water tubes'to receive 'Water therefrom and to support the inner ends ofthe ivatertub'es,

and risers for the outerv and interniediate manifolds connected to one another and to the steam drum.

Q'. A steam boiler comprising asteam 3 drum, horizontal outer manifold'sfivater tube units arranged in verticalroivs at op# posite sides of the verticalv centerV vofV the boiler, the units of each roW being 'coii nected to receive Water from the respective outer manifolds, central horizontal mani# folds connected to the inner ends offthfe unit-s of both roivs, and' vertical' circulating pipes for the outer and central manifolds connected at their upper portions to one an# l other and to the steam drum. y Y l A steam boiler comprising l'ioirzontal outer Water manifolds arranged at opposite sides of the boiler, vertical manifolds eonnecting them', vertical roivs of Water tube units, tlieunits of each row being Vconnected tothe manifoldsfat the respective sides of the boiler, intermediate Ihorizontal Water manifolds 'connected to the inner ends' of the Water tube units, andvertic'alinanifolds connectingvsaid intermediate horizon@ tal manifolds and connected 'at their upper` ends to the vertical manifolds for the outer horizontal manifolds.` a v et. A steam boiler comprising a plurality of superpo'sed sections, leach, section comprising an outer horizontal Water manifold,

Water tube units connected Yto receiyewater from such units'an inner yWater manifold connected to receive ivater from such .Walter tube units, and sectional vertical manifolds having their upper ends connected to one another and connecting respectively the outer and inner manifolds.

5. VA steam boiler comprising a plurality of superposed sections, each section comprising a pair Aof horizontal outer water manifolds, parts of vertical water manifolds, water tube units connected to receive water from the outer horizontal manifolds, inner horizontal water manifolds arranged between the outer manifolds and connected to receive water from the water tube units, parts of vertical water manifolds connected to said intermediate' horizontal manifolds, and means connecting the upper ends of the vertical manifolds for the outer and inner horizontal manifolds.

6. A steam boiler comprising vertical water manifolds divided into sections, means detachably connecting such sections, outer horizontal water manifolds connecting the respective sections of the vertical manifolds, sets of water tube units connected to the respective horizontal manifolds to receive water therefrom, inner horizontal Water manifolds arranged between the outer horizontal manifolds and connected to the water tube units to receive water therefrom, vertical water manifolds divided into sections, the sections being connected to the respective inner horizontal manifolds, and means connecting the upper ends of the vertical manifolds for the outer and inner horizontal manifolds. f

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

HORACE FURMANl W. W. LANIER, Jr.

Copies of this patent may be obtainedrforve cents each, by addressing the Commissioner of Patents, Washington, I). C. 

